Malvern, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.3 °C (low) to 23.1 °C (high). Annual precipitation averages 1447.8 Millimeters. Malvern is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.8 °C | 11.2 °C | 104.9 mm |
| February | 1 °C | 13.8 °C | 119.89 mm |
| March | 4.9 °C | 18.6 °C | 135.64 mm |
| April | 9.4 °C | 23.7 °C | 152.65 mm |
| May | 15.1 °C | 27.3 °C | 144.78 mm |
| June | 19.5 °C | 31.5 °C | 106.68 mm |
| July | 21.4 °C | 33.5 °C | 109.22 mm |
| August | 20.7 °C | 33.4 °C | 90.42 mm |
| September | 16.8 °C | 30 °C | 101.6 mm |
| October | 9.9 °C | 24.1 °C | 112.52 mm |
| November | 4.3 °C | 17.3 °C | 129.54 mm |
| December | 0.8 °C | 12.4 °C | 139.95 mm |
| Annual | 10.3 °C | 23.1 °C | 1447.79 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |